package game.johan.engine;
/*
Copyright (C) 2013 Johan Ceuppens

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/

import java.util.LinkedList;

/*
 * This class can store surfacelist and surface objects
 * It can fetch the next surface from these inside 
 * the _buffer variable
 */

class SurfaceTileFetcher
{
	private Caretaker<SurfaceTileFetcher> _surfacetilefetchercaretaker = new Caretaker<SurfaceTileFetcher>();
	
	private int _currentindex; 
	private LinkedList _buffer = new LinkedList();
	public SurfaceTileFetcher() {
		_currentindex = 0;
	}

	public int size() {
		return _buffer.size();
	}
	
	public SurfaceTile get() {
		if (_currentindex < _buffer.size()) {
			Object o = _buffer.get(_currentindex);
				_currentindex++;
				return (SurfaceTile)o;
		} else {
			_currentindex = 0;
			return null;
		}
	}
	
	public void put(SurfaceTile surf) {
		_buffer.add(surf);
	}
	
	public void save() {
		_surfacetilefetchercaretaker.save(this);
	}
	
	public void restore() {
		_surfacetilefetchercaretaker.restore();
	}
	
}
